[at least ones where I have a photo]
Some of these have closed, unfortunately.
Matt Connors at Sikkema Jenkins, Turn The Beat Around
Lars Fisk at Taxter & Spengemann
Jennifer Toth at Holland Tunnel, Ménage à Trois (through April 16)
Larry Bamburg at Esso (through April 15) -- He also has amazing kinetic sculptures which I was unable to photograph.